EP0448722B1 - Einrichtung zur Übervachung der Bestrahlungsdosis eines Produktes - Google Patents

Einrichtung zur Übervachung der Bestrahlungsdosis eines Produktes Download PDF

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Publication number
EP0448722B1
EP0448722B1 EP90914757A EP90914757A EP0448722B1 EP 0448722 B1 EP0448722 B1 EP 0448722B1 EP 90914757 A EP90914757 A EP 90914757A EP 90914757 A EP90914757 A EP 90914757A EP 0448722 B1 EP0448722 B1 EP 0448722B1
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EP
European Patent Office
Prior art keywords
conveyor
dose
barrier
irradiation
product
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP90914757A
Other languages
English (en)
French (fr)
Other versions
EP0448722A4 (en
EP0448722A1 (de
Inventor
Mamoru Yoshino Kogyosho Co. Ltd. Oshida
Masaru Yoshino Kogyosho Co. Ltd. Oizumi
Yoshiyuki Yoshino Kogyosho Co. Ltd. Ichizawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yoshino Kogyosho Co Ltd
Original Assignee
Yoshino Kogyosho Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yoshino Kogyosho Co Ltd filed Critical Yoshino Kogyosho Co Ltd
Publication of EP0448722A1 publication Critical patent/EP0448722A1/de
Publication of EP0448722A4 publication Critical patent/EP0448722A4/en
Application granted granted Critical
Publication of EP0448722B1 publication Critical patent/EP0448722B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21K—HANDLING OF PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
    • G21K5/00—Irradiation devices
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21K—HANDLING OF PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
    • G21K5/00—Irradiation devices
    • G21K5/10—Irradiation devices with provision for relative movement of beam source and object to be irradiated
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/04—After-treatment of articles without altering their shape; Apparatus therefor by wave energy or particle radiation, e.g. for curing or vulcanising preformed articles
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21K—HANDLING OF PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
    • G21K1/00—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
    • G21K1/10—Scattering devices; Absorbing devices; Ionising radiation filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0866—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using particle radiation
    • B29C2035/0877—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using particle radiation using electron radiation, e.g. beta-rays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets
    • B29L2007/008—Wide strips, e.g. films, webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7158—Bottles

Definitions

  • the present invention relates to an apparatus for controlling the dose of irradiation, designed for controlling the dose of electron rays with which a synthetic resin product is irradiated.
  • the product may be a bottle or a film or its preform. Such control may eliminate the monomers contained in the product. It is also desirable to control the dose of ultraviolet or infrared rays with which such a product is irradiated for surface treatment, material treatment or sterilisation.
  • the amount of electron rays with which products are irradiated should be differentiated depending on the thickness and shape of the products and other considerations.
  • Such differentiation of dose of electron rays is normally realised by moving the conveyor belts at different speeds to optimise the duration of exposure to each of the products in the irradiation zone, the speed of each of the conveyor belts being appropriately selected to meet the required amount of electron rays for preforms on it.
  • the number of products that can be fed to a conveyor per unit time often differs from the number of products that can be treated by electron rays per unit time.
  • the number of products fed onto each of the conveyors is a function of their size and shape while the speed at which each of the conveyors is operated is a function of the dose required by the products being carried on it and there are no existing apparatuses that simultaneously satisfy these two functional requirements, resulting in too poorly fed conveyors that operate at a high speed and too heavily fed conveyors that operate at a low speed and accompanied by the problem of congestion and occasional accidents.
  • an apparatus for controlling the dose of irradiation of a product comprising a first barrier body and a second barrier body, having the same configuration as the first barrier body, arranged in juxtaposition with one another, and arranged between a conveyor of the product and an irradiation device located opposite to the conveyor, the said first barrier and the said second barrier both being slidably movable along a running direction of the conveyor, characterised in that each body comprises a plurality of oblique sections arranged obliquely to the running direction of the conveyor, the relative position between the first barrier body and the second barrier body in the running direction of the conveyor being so adjustable as to enable control of the dose of irradiation reaching the product.
  • Each of the first and second barrier bodies may be so constructed that it is formed with a conduit for circulation of coolant, preferably water, through an internal area of the body.
  • the product can be exposed to electron rays to a maximum extent by removing the first and second barrier bodies from the electron rays irradiation zone through a sliding action.
  • the dose to which the product is subjected should be limited to a given extent, it can be controlled by moving the first and second barrier bodies until the gap between the two barrier bodies meets the required distance so that the product is exposed only to those electron rays that come through the gap and hence receives the required dose.
  • the barrier bodies and may be placed in a completely overlapped position through a sliding action between the irradiation device and the conveyor to maximise the gap through which electron rays can pass and therefore the exposure of the product to the rays (see Figures 2 and 4).
  • the first and second barrier bodies are moved relative to each other along the moving direction of the conveyor through a sliding action so that any two corresponding oblique sections of the barrier bodies that have been overlapped are now separated from each other to reduce the area of the gaps between any adjacent sections and hence to limit the exposure of the product to electron rays to a desired level.
  • each of the first and second barrier bodies When each of the first and second barrier bodies are provided with a conduit for coolant to run through its entire internal area, they can be effectively cooled even if they are excessively heated by the irradiated electron rays. Since the coolant is constantly circulated through the conduit in each of the barrier bodies, any danger of the coolant emitting heat due to the air bubbles formed within it through irradiation of electron rays, is effectively eliminated.
  • a first barrier body 1 and a second barrier body 2 have the same configuration, each having a plurality of oblique sections 3 arranged obliquely to the running direction of a conveyor 5.
  • the first and second barrier bodies 1 and 2 are vertically juxtaposed and they each comprise a stainless steel pipe which is folded a number of times to form a zigzag route. Coolant passes through into the pipe.
  • the stainless steel pipe is made of SU304 of Japanese Industrial Standards with a view to preventing rust being forming on the surface thereof under the influence of ozone generated by the electron rays.
  • the angle of the oblique sections 3 relative to the moving direction of the conveyor 5 is preferably between 15 and 90 degrees, but is not limited thereto.
  • the conveyor 5 includes a number of buckets for receiving a preform 4 (not shown). Each bucket carries the preform 4 therein while the preform 4 is constantly rotated so that it is evenly exposed to electron rays.
  • the present invention is not limited to the case in which preforms carried by the conveyors are rotated.
  • the case in which the carried preform is not rotated is included in the present invention.
  • first and second barrier bodies 1 and 2 have the same configuration, but are vertically juxtaposed.
  • Each barrier body comprises a rectangular shaped frame and a plurality of oblique sections obliquely arranged relative to the lateral and longitudinal members of the frame.
  • the frame members and oblique sections are hollow in cross section and communicate with one another to form a complete route for circulation of coolant, for example water, that runs there through from one end of the route to the other.
  • An apparatus for controlling the dose of irradiation according to the invention is applicable not only to control of the dose of electron rays to synthetic resin products but also to that of ultraviolet or infrared rays to be used for surface treatment or material treatment.
  • an apparatus for controlling the dose of irradiation according to the present invention is not limited to preforms of synthetic resin bottles or films but is applicable to those of synthetic resin tubes and other forms, as well as to metal products, paper products and so on.
  • an apparatus for controlling the dose of irradiation can control the dose of electron rays, ultraviolet rays, infrared rays and the like reaching the products by adjusting the gap between its first and second barrier bodies, the running speed of a conveyor carrying the products can be determined so as to match the rate of supply of products rendering it unnecessary to reduce the speed of the conveyor to maximise the dose for the products. Consequently, with an apparatus in accordance with the invention, the problems of congested are production lines and reduced line productivity are obviated.
  • each of the first and second barrier bodies is provided with a conduit for circulation of coolant, they can be effectively cooled even if they are undesirably heated by electron rays, and stored heat and any bubbles of air that are formed in the coolant can be effectively moved away to eliminate any danger of storage of excessive heat within the barrier bodies. Therefore, an apparatus for controlling the dose of irradiation according to the present invention is highly durable and hence remarkably cost effective.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Measurement Of Radiation (AREA)
  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Manufacturing And Processing Devices For Dough (AREA)
  • Radiation-Therapy Devices (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)

Claims (2)

  1. Vorrichtung zur Steuerung der Bestrahlungsdosis eines Produktes, umfassend einen ersten Barrierenkörper (1) und einen zweiten Barrierenkörper (2), welcher die gleiche Konfiguration hat, wie der erste Barrierenkörper (1), welche nebeneinander angeordnet sind, und zwischen einer Transportvorrichtung (5) des Produktes und einer Bestrahlungsvorrichtung (6), welche sich gegenüber der Transportvorrichtung (5) befindet, angeordnet, wobei die erste Barriere (1) und die zweite Barriere (2) beide gleitend entlang einer Laufrichtung der Transportvorrichtung (5) beweglich sind, dadurch gekennzeichnet, daß jeder Körper (1, 2) eine Vielzahl von schrägen Abschnitten (3) umfaßt, welche gegenüber der Laufrichtung der Transportvorrichtung (5) schräg angeordnet sind, wobei die relative Position zwischen dem ersten Barrierenkörper (1) und dem zweiten Barrierenkörper (2) in der Laufrichtung der Transportvorrichtung (5) so einstellbar ist, daß die Steuerung der das Produkt erreichenden Bestrahlungsdosis ermöglicht wird.
  2. Vorrichtung zur Steuerung der Bestrahlungsdosis nach Anspruch 1, dadurch gekennzeichnet, daß der erste Barrierenkörper (1) und der zweite Barrierenkörper (2) jeweils mit einem Kanal (7) zur Zirkulation eines Kühlmediums durch einen inneren Bereich des Körpers ausgebildet ist.
EP90914757A 1989-10-09 1990-10-09 Einrichtung zur Übervachung der Bestrahlungsdosis eines Produktes Expired - Lifetime EP0448722B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP263406/89 1989-10-09
JP1263406A JP2830880B2 (ja) 1989-10-09 1989-10-09 照射量調節装置
PCT/JP1990/001304 WO1991005353A1 (en) 1989-10-09 1990-10-09 Illuminance controlling device

Publications (3)

Publication Number Publication Date
EP0448722A1 EP0448722A1 (de) 1991-10-02
EP0448722A4 EP0448722A4 (en) 1993-05-05
EP0448722B1 true EP0448722B1 (de) 1997-01-02

Family

ID=17389060

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90914757A Expired - Lifetime EP0448722B1 (de) 1989-10-09 1990-10-09 Einrichtung zur Übervachung der Bestrahlungsdosis eines Produktes

Country Status (13)

Country Link
US (1) US5220174A (de)
EP (1) EP0448722B1 (de)
JP (1) JP2830880B2 (de)
KR (1) KR0172958B1 (de)
CN (1) CN1040261C (de)
AT (1) ATE147188T1 (de)
AU (1) AU633369B2 (de)
CA (1) CA2044177C (de)
DE (1) DE69029573T2 (de)
ES (1) ES2098272T3 (de)
ID (1) ID932B (de)
MY (1) MY107268A (de)
WO (1) WO1991005353A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5771270A (en) * 1997-03-07 1998-06-23 Archer; David W. Collimator for producing an array of microbeams
JP5534741B2 (ja) * 2009-08-10 2014-07-02 信越ポリマー株式会社 基板用保持フレームの製造方法
FR2984751B1 (fr) * 2011-12-21 2014-08-29 Sidel Participations Dispositif de decontamination par irradiation de l'interieur d'un objet
DE102014103833B3 (de) * 2014-03-20 2015-07-09 Bundesrepublik Deutschland, Vertreten Durch Den Bundesminister Für Wirtschaft Und Energie, Dieser Vertreten Durch Den Präsidenten Der Bundesanstalt Für Materialforschung Und -Prüfung (Bam) Schlitzblende für Anwendungen in der Radiographie

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2004050B1 (de) * 1970-01-29 1971-05-13 Werner & Pfleiderer Vorrichtung zum Behandeln von Werkstoffen mit hochenergetischen Strahlen,beispielsweise Elektronenstrahlen
US3826014A (en) * 1973-03-19 1974-07-30 Sun Chemical Corp Shutter mechanism for radiation-curing lamp
JPS5146697A (ja) * 1974-10-21 1976-04-21 Furukawa Electric Co Ltd Denshisenshoshasochi
JPS573920A (en) * 1980-06-04 1982-01-09 Furukawa Mining Co Ltd Pile driving and drawing machine using breaker
JPS5750755A (en) * 1980-09-10 1982-03-25 Hitachi Ltd Variable slit for large current ion
DE3138731A1 (de) * 1981-09-29 1983-04-07 Siemens AG, 1000 Berlin und 8000 München Ueberwachungsanordnung fuer die beschleunigungsenergie eines elektronenbeschleunigers
JPS61220844A (ja) * 1985-03-27 1986-10-01 Toshiba Electric Equip Corp 紫外線照射装置
EP0392031A1 (de) * 1989-04-10 1990-10-17 Siemens Aktiengesellschaft Strahlentherapiegerät mit bewegbarer Blende

Also Published As

Publication number Publication date
JP2830880B2 (ja) 1998-12-02
ID932B (id) 1996-09-17
KR920701986A (ko) 1992-08-12
KR0172958B1 (ko) 1999-05-01
CN1040261C (zh) 1998-10-14
CA2044177A1 (en) 1991-04-10
JPH03123900A (ja) 1991-05-27
EP0448722A4 (en) 1993-05-05
AU633369B2 (en) 1993-01-28
CN1051696A (zh) 1991-05-29
MY107268A (en) 1995-10-31
WO1991005353A1 (en) 1991-04-18
DE69029573T2 (de) 1997-04-24
CA2044177C (en) 2000-01-18
EP0448722A1 (de) 1991-10-02
DE69029573D1 (de) 1997-02-13
AU6513290A (en) 1991-04-28
US5220174A (en) 1993-06-15
ES2098272T3 (es) 1997-05-01
ATE147188T1 (de) 1997-01-15

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